CN203935255U - Negative pressure blood back device - Google Patents
Negative pressure blood back device Download PDFInfo
- Publication number
- CN203935255U CN203935255U CN201420357621.0U CN201420357621U CN203935255U CN 203935255 U CN203935255 U CN 203935255U CN 201420357621 U CN201420357621 U CN 201420357621U CN 203935255 U CN203935255 U CN 203935255U
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- CN
- China
- Prior art keywords
- blood back
- cavity
- vent
- cushion chamber
- negative pressure
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 239000008280 blood Substances 0.000 title claims abstract description 40
- 210000004369 blood Anatomy 0.000 title claims abstract description 40
- 239000007788 liquid Substances 0.000 claims abstract description 63
- 239000012528 membrane Substances 0.000 claims abstract description 50
- 239000003814 drug Substances 0.000 claims abstract description 34
- 238000001914 filtration Methods 0.000 claims abstract description 28
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000000741 silica gel Substances 0.000 claims abstract description 19
- 229910002027 silica gel Inorganic materials 0.000 claims abstract description 19
- 229960001866 silicon dioxide Drugs 0.000 claims abstract description 19
- 238000009423 ventilation Methods 0.000 claims abstract description 18
- 239000012535 impurity Substances 0.000 abstract description 6
- 230000036541 health Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000010419 fine particle Substances 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 210000003462 vein Anatomy 0.000 description 3
- 230000036772 blood pressure Effects 0.000 description 2
- 210000004204 blood vessel Anatomy 0.000 description 2
- 238000007872 degassing Methods 0.000 description 2
- 208000002925 dental caries Diseases 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000011176 pooling Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
This utility model belongs to field of medical, discloses a kind of negative pressure blood back device, comprising: upper casing and air-vent, lower casing, medicinal liquid gateway and medical silica-gel film; Medical silica-gel mould is combined on lower casing, is divided into ventilation lumen and cushion chamber; Ventilation lumen is communicated with air-vent, and cushion chamber is communicated with medicinal liquid gateway simultaneously.During pressure balance, medical silica-gel film is in horizontal vertical state.Before puncture, open flow regulator, medical silica-gel film communicates with the external world by air-vent, side-prominent to cushion chamber one, is negative pressure state; During puncture, be subject to after venous pressure pressure, air is extruded by air-vent, and medical silica-gel film is outstanding to discharge chamber gradually, and moment is realized blood back, just can judge venipuncture success; Separately can in cavity, set up one deck liquid medicine filtering membrane or choke filter membrane, complete under the prerequisite of blood back, realize the function of multi-filtering, automatic vent and automatic liquid-stopping, avoid impurity or gas to flow into human body, guarantee user safety.
Description
Technical field
This utility model relates to armarium technical field, and particularly a kind of negative pressure blood back device, judges with the venipuncture blood back of realizing under vein pressure condition.
Background technology
When carrying out human body puncture, because human body angular vein pressure lower (about 10cm water column is high) vein blood back phenomenon is difficult to observe, cannot accurately judge whether to puncture successfully.More crisp for some blood vessels, hard, the poor old people of elasticity, or the child that blood vessel is thin, pressure value is lower, after puncture, blood backflow phenomenon is more not obvious, is difficult to judge whether fast to puncture successfully, gives the clinical inconvenience of bringing.
Utility model content
(1) technical problem that will solve
The technical problems to be solved in the utility model is: while solving puncture operation, successful problem fast cannot judge whether to puncture.
(2) technical scheme
In order to solve the problems of the technologies described above, this utility model provides a kind of negative pressure blood back device, comprise: housing, be arranged on the blood back cavity in housing, be arranged on medicine liquid outlet, medicinal liquid entrance and air-vent on housing, be provided with medical silica-gel film in described housing, described medical silica-gel film is divided into separate ventilation lumen and cushion chamber by blood back cavity, described ventilation lumen is communicated with air-vent, and described cushion chamber is communicated with medicinal liquid entrance and medicine liquid outlet simultaneously.
Wherein, set up choke filter membrane in cushion chamber, the cavity of described choke filter membrane one side is communicated with medicinal liquid entrance, and the sidewall of this cavity is provided with steam vent; Cavity and the ventilation lumen of described choke filter membrane opposite side are adjacent, and are communicated with described medicine liquid outlet.
Wherein, set up for realizing choke filter membrane and the liquid medicine filtering membrane of double filtration in cushion chamber, the cavity of described choke filter membrane one side is communicated with medicinal liquid entrance, and the sidewall of this cavity is provided with steam vent; Cavity and ventilation lumen between described choke filter membrane and liquid medicine filtering membrane are adjacent; The cavity of described liquid medicine filtering membrane opposite side is communicated with medicine liquid outlet.
Wherein, described steam vent place is provided with exhaust membrane.
(3) beneficial effect
Technique scheme tool has the following advantages: this utility model negative pressure blood back device, and by medical silica-gel film and air-vent are set in blood back cavity, before and after puncture, regulate cushion chamber to negative pressure,, after puncturing successfully, moment is realized blood backflow, is convenient to observe; Simple in structure, processing technology is easy, blood back successful, directly perceived, and dependability is strong; Separately choke filter membrane can be set in cushion chamber, prevent that gas or the impurity in medicinal liquid from entering human body, and gas is discharged from steam vent; Choke filter membrane and liquid medicine filtering membrane are set in whole cushion chamber, completing under the prerequisite of moment blood back function, realize multi-filtering, further avoid impurity or gas to flow into human body, guarantee patient's health and safety.
Accompanying drawing explanation
Fig. 1 is the structural representation of this utility model negative pressure blood back device embodiment mono-;
Fig. 2 is in the embodiment mono-of this utility model negative pressure blood back device, structural representation when ventilation lumen and buffer cavity pressure balance;
Fig. 3 is in the embodiment mono-of this utility model negative pressure blood back device, the structural representation of cushion chamber when negative pressure;
Fig. 4 is in the embodiment mono-of this utility model negative pressure blood back device, the structural representation of cushion chamber when malleation;
Fig. 5 is the structural representation of this utility model negative pressure blood back device embodiment bis-;
Fig. 6 is the structural representation of this utility model negative pressure blood back device embodiment tri-.
Wherein, 1, medicinal liquid entrance; 2, housing; 3, medicine liquid outlet; 4, air-vent; 5, medical silica-gel film; 6, choke filter membrane; 7, steam vent; 8, liquid medicine filtering membrane.
The specific embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present utility model is described in further detail.Following examples are used for illustrating this utility model, but are not used for limiting scope of the present utility model.
Embodiment mono-:
As Figure 1-4, a kind of negative pressure blood back of this utility model device, is comprised of a disc housing 2, in housing 2, is provided with blood back cavity, and the edge of housing 2 is provided with medicine liquid outlet 3 and medicinal liquid entrance 1; In housing 2, be provided with a medical silica-gel film 5, and edge pressing is connected on the inwall of blood back cavity, described medical silica-gel film 5 is divided into separate ventilation lumen and cushion chamber by blood back cavity; Described cushion chamber is communicated with medicinal liquid entrance 1 and medicine liquid outlet 3 simultaneously, is also provided with the air-vent 4 being communicated with ventilation lumen on described housing 2.
Before puncturing, the pressure between cushion chamber and ventilation lumen is in poised state (as Fig. 2), and deformation does not occur medical silica-gel film 5; Then adjust flux actuator, medicinal liquid is passed in puncture tube, pressure in cushion chamber becomes negative pressure, because ventilation lumen is in communication with the outside by air-vent 4, air pressure in ventilation lumen equates with atmospheric pressure, medical silica-gel film 5 middle parts, under atmospheric effect, to cushion chamber internal projection (as Fig. 3), then start puncture procedure; After puncture, because blood pressure is higher than atmospheric pressure, endovascular blood flows in puncture tube fast, and under the effect of blood pressure, the pressure in cushion chamber is become and approached atmospheric pressure from negative pressure gradually, finally becomes barotropic state; In this process, medical silica-gel film 5 also becomes Fig. 2 state from Fig. 3 state gradually, finally becomes the barotropic state shown in Fig. 4.The deformation of medical silica-gel film 5 changes the volume of cushion chamber, realizes moment blood backflow, just can judge venipuncture success, has facilitated the operation of user, has guaranteed patient's health and safety." malleation " herein mentioned, " negative pressure " are all for atmospheric pressure, higher than atmospheric pressure, are called " malleation ", lower than atmospheric pressure, are called " negative pressure ".
Embodiment bis-:
As shown in Figure 5, the present embodiment is to have made some improvements on the basis of embodiment mono-, something in common repeats no more, difference is: in cushion chamber, set up choke filter membrane 6, cushion chamber is divided into two separate cavitys, and the cavity of choke filter membrane 6 one sides is communicated with medicinal liquid entrance 1, and the sidewall of this cavity is provided with steam vent 7, steam vent 7 places are provided with exhaust membrane, and exhaust membrane is positioned at cushion chamber (not shown); Cavity and the ventilation lumen of described choke filter membrane 6 opposite sides are adjacent, and are communicated with described medicine liquid outlet 3.
Puncture preoperative operation and embodiment mono-is basic identical, and difference is, medicinal liquid is during by choke filter membrane 6, fine particles in can filtering medicinal liquid, and the tiny bubble producing also can be blocked on choke filter membrane 6 places, and discharge by steam vent 7, avoid flowing into human body, guarantee to use safety.Described in embodiment mono-, after puncturing successfully, under the effect of medical silica-gel film 5, also can realize moment blood back.
As can be seen here, above-described embodiment can be realized: the fine particles in filtering liquid medicine, automatic vent and moment blood back effect.
Embodiment tri-:
As shown in Figure 6, the present embodiment is further to improve on the basis of embodiment bis-, and something in common repeats no more, and difference is: in the cushion chamber of embodiment bis-, set up one deck liquid medicine filtering membrane 8, realized double filtration.Liquid medicine filtering membrane 8 and choke filter membrane 6 are divided into three separate cavitys by cushion chamber, and the cavity of described choke filter membrane 6 one sides is communicated with medicinal liquid entrance 1, and the sidewall of this cavity is provided with steam vent 7; Cavity and ventilation lumen between described choke filter membrane 6 and liquid medicine filtering membrane 8 are adjacent; The cavity of described liquid medicine filtering membrane 8 opposite sides is communicated with medicine liquid outlet 3.Medicinal liquid flows into after the cavity between liquid medicine filtering membrane 8 and choke filter membrane 6 by choke filter membrane 6 (operation principle is with embodiment bis-), flow through liquid medicine filtering membrane 8, the fine particles of this process in can filtering liquid medicine, after success puncture (operation principle is with embodiment mono-), medicinal liquid is after double filtration, by medicine liquid outlet 3, flowed out, finally flow into human body.
In above-described embodiment, medicinal liquid, through in the process of cushion chamber, through twice filtration of choke filter membrane 6 and liquid medicine filtering membrane 8, avoids impurity to enter human body with medicinal liquid as much as possible, guarantees health; Realize the degassing function to medicinal liquid simultaneously, avoided gas to enter human body; After puncturing successfully, also can realize moment blood back, further guarantee patient's health and safety.
In addition, medicinal liquid entrance 1 and medicine liquid outlet 3 go out to be equipped with bending, and this structure has played to liquid mobile slow down used, avoid that liquid flow is too fast produces excessive impact to the film material in housing 2, extend the service life of film material.
As can be seen from the above embodiments, this utility model, by medical silica-gel film 5 and air-vent 4 are set in blood back cavity, is realized the object that the liquid to flowing in blood back cavity cushions, after puncturing successfully, operator observe after blood backflow, just can judge venipuncture success; Choke filter membrane 6 is set in cushion chamber, prevents that gas or the impurity in medicinal liquid from entering human body, and gas is discharged from steam vent 7; Choke filter membrane 6 and liquid medicine filtering membrane 8 are set in whole cushion chamber, completing under the prerequisite of pooling feature, realize multi-filtering, further avoid impurity or gas to flow into human body, realize degassing function simultaneously, guarantee patient's health and safety.
The above is only preferred implementation of the present utility model; should be understood that; for those skilled in the art; do not departing under the prerequisite of this utility model know-why; can also make some improvement and replacement, these improvement and replacement also should be considered as protection domain of the present utility model.
Claims (4)
1. a negative pressure blood back device, it is characterized in that, comprise: housing (2), be arranged on the blood back cavity in housing (2), be arranged on medicine liquid outlet (3), medicinal liquid entrance (1) and air-vent (4) on housing (2), in described housing (2), be provided with medical silica-gel film (5), described medical silica-gel film (5) is divided into separate ventilation lumen and cushion chamber by blood back cavity, described ventilation lumen is communicated with air-vent (4), and described cushion chamber is communicated with medicinal liquid entrance (1) and medicine liquid outlet (3) simultaneously.
2. negative pressure blood back device as claimed in claim 1, it is characterized in that, in cushion chamber, set up choke filter membrane (6), the cavity of described choke filter membrane (6) one sides is communicated with medicinal liquid entrance (1), and the sidewall of this cavity is provided with steam vent (7); Cavity and the ventilation lumen of described choke filter membrane (6) opposite side are adjacent, and are communicated with described medicine liquid outlet (3).
3. negative pressure blood back device as claimed in claim 1, it is characterized in that, in cushion chamber, set up for realizing choke filter membrane (6) and the liquid medicine filtering membrane (8) of double filtration, the cavity of described choke filter membrane (6) one sides is communicated with medicinal liquid entrance (1), and the sidewall of this cavity is provided with steam vent (7); Cavity and ventilation lumen between described choke filter membrane (6) and liquid medicine filtering membrane (8) are adjacent; The cavity of described liquid medicine filtering membrane (8) opposite side is communicated with medicine liquid outlet (3).
4. negative pressure blood back device as claimed in claim 2 or claim 3, is characterized in that, described steam vent (7) locates to be provided with exhaust membrane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420357621.0U CN203935255U (en) | 2014-06-30 | 2014-06-30 | Negative pressure blood back device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420357621.0U CN203935255U (en) | 2014-06-30 | 2014-06-30 | Negative pressure blood back device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203935255U true CN203935255U (en) | 2014-11-12 |
Family
ID=51854608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420357621.0U Expired - Fee Related CN203935255U (en) | 2014-06-30 | 2014-06-30 | Negative pressure blood back device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203935255U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110403813A (en) * | 2018-10-12 | 2019-11-05 | 北京雅果科技有限公司 | A kind of concussion impulse generator and auxiliary expectoration device |
| CN110538003A (en) * | 2019-08-30 | 2019-12-06 | 宁波健世生物科技有限公司 | Heart valve opening and closing detector |
-
2014
- 2014-06-30 CN CN201420357621.0U patent/CN203935255U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110403813A (en) * | 2018-10-12 | 2019-11-05 | 北京雅果科技有限公司 | A kind of concussion impulse generator and auxiliary expectoration device |
| CN110403813B (en) * | 2018-10-12 | 2024-05-24 | 北京雅果科技有限公司 | Shock pulse generator and auxiliary sputum excretion device |
| CN110538003A (en) * | 2019-08-30 | 2019-12-06 | 宁波健世生物科技有限公司 | Heart valve opening and closing detector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160516 Address after: 101500 Beijing City, Miyun Dong Ji Road No. 2 hospital Patentee after: Beijing kailier Medical Technology Co Ltd Address before: 101500 No. 123, Da Sheng Road, A District, Miyun Industrial Development Zone, Beijing Patentee before: You Quli |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141112 Termination date: 20190630 |